Mobile Optimization Guide

Guide to mobile responsiveness, touch interactions, and performance optimization in Qiwako

Table of Contents

1. Overview
2. Responsive Design Principles
3. Touch Interactions
4. Performance Optimization
5. Testing

Overview

Qiwako adopts a Mobile-First design philosophy. This means we design for the smallest screen first and progressively enhance the experience for larger screens.

Key Goals

• Fluid Layouts: Content adapts gracefully to any screen width.
• Touch-Friendly: All interactive elements are large enough for fingers (min 44x44px).
• Fast Loading: Optimized assets for cellular networks.

Responsive Design Principles

We use Tailwind CSS breakpoints to handle responsiveness.

Breakpoints

Layout Patterns

1. Stacking (Mobile) vs. Grid (Desktop)

<div class="grid grid-cols-1 md:grid-cols-3 gap-4">
 <!-- Items stack on mobile, 3 columns on desktop -->
</div>

2. Hidden/Visible Elements

<!-- Hidden on mobile, visible on desktop -->
<div class="hidden md:block">Sidebar</div>

<!-- Visible on mobile, hidden on desktop -->
<div class="block md:hidden">Mobile Menu Button</div>

Touch Interactions

Touch Targets

Ensure all buttons and links have a minimum hit area of 44x44 pixels.

<button class="p-3 min-h-[44px] min-w-[44px]">
 Click Me
</button>

Gestures

We use your-domain.com for handling simple gestures like swipe to close menus.

<div @touchstart="startSwipe" @touchend="endSwipe">
 Swipeable Content
</div>

Performance Optimization

Mobile users often have slower connections and limited data.

Image Optimization

• Lazy Loading: Use loading="lazy" on all images below the fold.
• WebP Format: Serve WebP images for smaller file sizes.
• Responsive Images: Use srcset to serve appropriate sizes.

<img src="your-domain.com" 
 srcset="your-domain.com 500w, your-domain.com 1000w" 
 loading="lazy" 
 alt="Optimized Image">

CSS/JS Minimization

• PurgeCSS: Remove unused CSS classes (handled by Tailwind).
• Defer JS: Defer non-critical JavaScript execution.

Testing

Device Testing

Test on real devices whenever possible:
* iOS (Safari)
* Android (Chrome)

Browser Tools

Use Chrome DevTools "Device Mode" to simulate:
* Various screen sizes
* Network throttling (3G/4G)
* Touch events

Lighthouse

Run Lighthouse audits specifically for "Mobile" to identify performance and usability issues.

Related Documentation

• PWA Features
• Design System